<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>mhtml4</title>
    <style>
        body {background: silver; color: blue}
        hr {color: red}
    </style>
</head>
<body>
<h2>二号标题</h2>
<hr>
一些文字
</body>
</html>